Commitments and Contingencies - Summary of Commitments (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Commitments and Contingencies
Investment Commitment	$ 144,347
2019 Funding	14,866
Total Commitments funded	66,673
Remaining commitment	77,674
Real estate properties
Commitments and Contingencies
Investment Commitment	50,647
2019 Funding	9,450
Total Commitments funded	18,959
Remaining commitment	31,688
Accrued incentives and earn-out liabilities
Commitments and Contingencies
Investment Commitment	9,000
Remaining commitment	9,000
Mortgage loans
Commitments and Contingencies
Investment Commitment	56,200
2019 Funding	3,419
Total Commitments funded	22,009
Remaining commitment	34,191
Commitments To Expand and Renovate Properties
Commitments and Contingencies
Investment Commitment	35,700
Contingent Funding Commitments
Commitments and Contingencies
Investment Commitment	20,500
Joint venture investments
Commitments and Contingencies
Investment Commitment	25,650
2019 Funding	394
Total Commitments funded	24,078
Remaining commitment	1,572
Notes receivable
Commitments and Contingencies
Investment Commitment	2,850
2019 Funding	1,603
Total Commitments funded	1,627
Remaining commitment	$ 1,223